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AC Contactor More Efficient, Can Be Used Flexibly
Nov 02, 2017

AC contactors are widely used as power break and control circuits.

AC contactor using the main contact to open and close the circuit, with auxiliary contacts to control the implementation of instructions.

The main contact is generally only normally open contacts, and auxiliary contacts often have two pairs of normally open and normally closed contact, small contactors are often used as an intermediate relay with the main circuit.

AC contactor contacts, made of silver tungsten alloy, with good conductivity and high temperature ablation.

AC contactor action power from the AC electromagnet, the electromagnet by the two "mountain" shape of the young silicon steel stack, one of the fixed, put in the above coil, the operating voltage has a variety of options. In order to stabilize the magnetic force, the suction surface of the core, plus the short circuit ring. The AC contactor relies on a spring return after power failure.

The other half is the activities of the core, structure and fixed iron core, to drive the main contact and auxiliary contact short.

20 amperes above the contactor with an arc extinguishing cover, the use of breaking the circuit when the electromagnetic force, quickly pull off the arc to protect the contacts.

AC contactor is made as a whole, shape and performance are also rising, but the function is always the same. Regardless of the extent to which the technology is developed, the ordinary AC contactor still has its important position.

AC contactor using the main contact to open and close the circuit, with auxiliary contacts to control the implementation of instructions.

The main contact is generally only normally open contacts, and auxiliary contacts often have two pairs of normally open and normally closed contact, small contactors are often used as an intermediate relay with the main circuit.

AC contactors are the most common low-voltage control appliances for power drag and automatic control systems. As an actuator, for the connection, breaking the line, or frequent control of the motor and other equipment to run. By the moving, static main contact, arc cover, moving, static core, auxiliary contacts and bracket shell and other components. After the electromagnetic coil is energized, the movable iron core is sucked under the action of electromagnetic force, and the movable contact is brought into contact with the stationary contact directly or through the lever transmission. Electromagnetic coil power, the moving core in the return under the action of the spring automatically return, commonly known as the release, contact separately, circuit breaking.

AC contactor is an intermediate control element, the advantage is that frequent pass, off the line to a small current control of high current. With the thermal relay work can also play a certain overload protection on the load equipment. Because it is by electromagnetic field suction through, broken work, relative to the manual hand, closing circuit, it is more efficient, more flexible use, you can at the same time, together with multiple load lines, as well as self-locking function, by manual short After the pull together, you can enter the self-locking state of continuous work

AC contactor is an intermediate control element, can be frequent through, off the line, with a small current control of high current. And thermal relay used together, but also on the load equipment to play a certain role in overload protection. Compared with the manual hand, closing circuit, AC contactor is more efficient, can be used flexibly, and at the same time, together with multiple load lines, as well as self-locking function, by hand short after the pull, you can enter from The lock state continues to work.